We divide 81402523 by 2
We're looking to find how many times 2 goes into 81402523.

Going ahead to step 1:
If we divide 8 by 2, we get 4 and a remainder of 0.
The next digit of our result is 4. 
Result so far: 4.0
If we subtract 8 from 8, we get 0.
Grab the next digit (1) from the dividend, add it to 0, then carry on: 1 / 2

Going ahead to step 2:
The number 2 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 40.0
Subtract 0 from 1 to get 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 2

Let's proceed to step 3:
2 can be fit into 14 7 times, resulting in a remainder of 0.
The next digit of our result is 7. 
Result so far: 407.0
The remainder is 0 after subtracting 14 from 14.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 2

Going ahead to step 4:
When dividing 0 by 2, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4070.0
If we subtract 0 from 0, we get 0.
Append the next digit (2) from the dividend to 0 and continue with: 2 / 2

Moving on to step 5:
2 divided by 2 is 1 with a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 40701.0
Subtract 2 from 2 to get 0.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 2

On to step 6:
When dividing 5 by 2, we get 2 with a remainder of 1.
The next digit of our result is 2. 
Result so far: 407012.0
Subtracting 4 from 5 leaves us with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 2

Going ahead to step 7:
The number 2 fits into 12 6 times, leaving a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 4070126.0
Subtracting 12 from 12 leaves us with 0.
Append the next digit (3) from the dividend to 0 and continue with: 3 / 2

On to step 8:
3 divided by 2 is 1 with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 40701261.0
If we take 2 away from 3, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 9:
If we divide 10 by 2, we get 5 and a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 40701261.5
Deduct 10 from 10 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
2 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 40701261.5
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 11:
2 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 40701261.5
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 40701261.5 with a remainder of 0.0.